tools/kvm/net/uip/arp.c

   1 #include "kvm/uip.h"
   2
   3 int uip_tx_do_arp(struct uip_tx_arg *arg)
   4 {
   5         struct uip_arp *arp, *arp2;
   6         struct uip_info *info;
   7         struct uip_buf *buf;
   8
   9         info = arg->info;
  10         buf = uip_buf_clone(arg);
  11
  12         arp      = (struct uip_arp *)(arg->eth);
  13         arp2     = (struct uip_arp *)(buf->eth);
  14
  15         /*
  16          * ARP replay code: 2
  17          */
  18         arp2->op   = htons(0x2);
  19         arp2->dmac = arp->smac;
  20         arp2->dip  = arp->sip;
  21
  22         if (arp->dip == htonl(info->host_ip)) {
  23                 arp2->smac = info->host_mac;
  24                 arp2->sip = htonl(info->host_ip);
  25
  26                 uip_buf_set_used(info, buf);
  27         }
  28
  29         return 0;
  30 }